Explanation of data types in this archive for "Paleomagnetic evidence for a long-lived, potentially reversing martian dynamo at ~3.9 Ga"


Specific README.txt files are available in each of these sub-folders.

Source labels are available in Supplementary Materials Fig. S3.

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QDM data: AF_demag_of_NRM, AF_demag_of_ARM, ARM_anisotropy, ARM_recording_limits, thermal_demag_of_NRM, pTRM_acquisition, pTRM_anisotropy, fusion_crust

Each folder contains data in two main forms: a B111 file (B111DataToPlot.mat) and a Bz file (Bz_ucxxx.mat, where xxx is the numerical upward continuation distance in microns), both in Matlab data format. The B111 file contains the processed output of QDM imaging, including maps of the viscous (B111para) and non-viscous (B111ferro) field magnitudes along the [111] crystallographic direction  in the sample (B111para), and various ODMR spectra fitting results (fitted peak locations, convergence checks, etc.). The Bz files contain a data matrix with the Bz intensity values, a raster of the optical light image, and information about the pixel size and half-thickness of the NV layer (5 µm in all maps).  Bz maps are in units of teslas. Finally, each file includes the raster image for each Bz field map (Bz_uc##.png) and the LED image of the corresponding field of view (LED.png) saved separately for convenience.


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CIT data: CIT, fusion_crust/S11_demag

Contains NRM demagnetization sequences for binned and unbinned data in CIT format.


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EDS data: EDS_data

S5_EDSdata, S10_EDSdata, and PtGroupSummary can be opened in MS Excel.
S5_overview and S10_overview can be opened in MS Powerpoint
